What is a key characteristic of sprinkler heads designed for high ceilings?

Sprinkler heads designed for high ceilings are typically larger to ensure effective coverage over greater distances. When installed in spaces with high ceilings, these sprinkler heads provide a wider spray pattern and increased water distribution to address the challenges posed by height. The added size allows for a larger nozzle orifice, which helps to project the water further down to the area needing protection. This is essential for an efficient fire suppression system, as the distance from the ceiling to the area where a fire could start is critical in determining how effective the sprinkler will be in extinguishing or controlling a fire.

The other choices can be seen as less relevant or inaccurate for this context. For example, a narrow spray pattern would not be effective for high ceilings, where a broader coverage is necessary. Operating without a water supply is not a function of any standard sprinkler head as they all require a water source to operate effectively. Lastly, interchangeability with low-profile heads is not applicable since sprinkler systems are designed specifically for the height and type of environment they are installed in, meaning that heads for high ceilings are not designed to function the same way as low-profile heads do.